Roughing machine



' Aug. 30, 1938. N. v. DYx-:R

ROUGHING MACHINE Filed Aprjil 9, 1934 This invention Vrel Patented ug.30, 1938 noUQHfNGI MACHINE Newell V. Dyer, Brockton, Mass., assigner `toY United yShoe Machinery Corporation, Paterson,

a corporation of-New Jersey applicati@ Aprile, 1934, serial No. 719,635

V8 Claims. (Cl. -51-1-10) ates to abrading machines and'isjhereinillustrated as embodied ina machine for roughing the margins of thinpieces of leather which are used for linings of bootsand shoes. f

`In the manufactureof cementflasted shoes, the ,overlasted margin of thelining is attached to ,the insole bycement; and it is desirable to roughthe margin ofia leather lining before cement is applied thereto so `asto Aensure a Vfirm bond betweenfthe overlasted margin of such a liningand the insole. Such a lining is commonly'made of thin, very exibleleather having a glaze on that fface which will contact with the foot ofthe wearer -in the flnishedshoe; land the roughing operation issufcientto remove vthis glaze from a narrow marginal portion of the lining andthereby expose ,a slightly roughened surface to the action of thecement. v 1 l Because of the nature of thematerial to be i operated uponthis `roughing operation isa'rather v delicateone which has hithertobeen performed by hand, the general object of the present invenutionbeing to provide a machine by whichthis op- .,.eration may be quicklyand accurately carried out.

`According to the present invention, the work is engaged on both sidesand fed past a rotary abrasivedisk. In the illustrated machine the workis engaged on the under side by a feed roll and on the upper side lby afeed disk .and a presser and fed past a rotaryvabrasive disk carried atthe lower end of a rotary shaft, the construction being such that theoperative portion of the abrasive disk sweeps over the `work from thebody `portion of the work outwardly to the edge thereof.

' Thesev and other features of the invention will `be described asembodied in an illustrated machine and pointed out in the appendedclaims.

Referring now to the accompanying drawing,

Fig. 1 is a front elevation of a portion of a machine in which thelpresent invention isembodied;

Fig. 2 is a section on the line II-II of Fig. 1, showing a vamp liningin process of being operated upon; and

Fig. 3` isa detail ,i of Fig. 2.

Certain parts of the machine are or may be the same as those of theskiving machine disclosed in United States Letters Patent No. 823,578,granted June 19, 1906, upon an application filed in the name of CharlesH. Bayley, and these parts will be briefly described, reference beingmade to the patent for details of construcnsection on the line lII--IIIouter lend a fee ical portion at its inner portion at its outerA end.cylindrical portion isf a f .sea

Ayielding presser 2| Awith an edge guide 23, the construction of thisvdisclosed in the patent to be described. VA ro shape of the presserchine is or may be th .the patent, referenc details including thedriving mechanism not' herein Shown.

' corresponds to` th rigid supporting disk `the three disks firmly totion. A horizontal rotary shaft 5 has fast to its d roll I which has afrusto-conend and a cylindrical Cooperating with the eed diskil mountedat 5 the lower end of an `upwardly extending rotary shaft I I which isnormally held down in the position shown by afcoiled spring I3 but mayyield upward, said shaft beingrotated through a spiral r I5 fast to theupper end of the shaft I Iwhich meshes with a spiral gear I1 on a rotaryshaft I9. The margin of the work is held down upon the frusto-conicalportion of the feed roll 1 by a vwith its edge in engagement being thesame as that referred to above except ythat the presser iscut away at 2|on a curve to correspondto the curved` edge of ra disk 33 later taryshaft 25,'inclined, as V2'I fast toits upper end which presser and edgeguide shown, has a pulley f is rotated by a belt 29 running in thedirection shown, said shaft being rotatably and slidably vmounted in a.sleeve 5 3 which is adjustably held in two brackets 49, 5I. As thus fardescribed, ex-

cept for the shape of the enlargement at the end of the shaft and exceptfor the referred to above, the mae same as that disclosed in patent forlower Y ebeing made to the 30 The machine of the patent is a skivingmachine', and to the lower end of the shaft which e inclined shaft 25there is fastened a knife. In the present machine there is fastened tothe lower end of the shaft 25 a Y 33, a flexible cushioning. disk 35,and a flexible abrasive disk 31. A headed screvv 39, which is threadedinto the enlarged` lower end of theshaft 25 and a washer 4I, clamp thelower end of the shaft and to each other. The margin on the lower faceof the rigid disk 33 is beveled at 43, asbest shown in Fig. 3, so thatthe outer margins l ofthe flexible disks 35, 3l may be bent upward by"pressure against theworkvfl. In order to cause the abrasive disk 31 toengage the work yieldingly,

be provided to supplement the weight of the shaft,

said spring being located between the enlarged lower end of the shaft 25and the under side of the bracket 49. In either case, when the shaft israised by insertion of a piece of work in the machine, the work-engagingmarginal portion of the abrasive disk is held yieldingly against theWork.

With the construction which has been described above it will be notedthat the thin and somewhat flimsy piece of work is engaged both on itsupper and lower faces by the members which feed it, that by reason ofthe edge guide it may be guided accurately through the machine, .andthat theV portion of the abrasive disk which is effective at any givenmoment to abrade the margin of the piece is moving in a direction fromthe body por-4 tion of the work toward the edge thereof. The

cushioning disk, which may be made of leather or may be merely anabrasive disk which has been more or less worn, and the beveling of themargin of the rigid supporting disk 33 render the machineparticularlyeffective to remove the glaze from light, flimsy material withoutdamaging said material since the action of the abrasive disk is renderedless harsh when either or both of these features are present; but itshould be understood that, if desired, the bevel may be omitted from themargin of the rigid disk 33 and the abrasive disk clamped directly tothe rigid disk.

Although the invention has been set forth as embodied in a particularmachine, it should be understood that the invention is not limited inthe scope of its application to the particular machine which has beenshown and described.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1.,A machine for roughing the margin of a piece of sheet materialhaving, in combination, means including a feed roll and a feed disk forfeeding the work, an edge guide, a rotary abrasive disk arranged toengage the work and progressively abrade the margin thereof, saidabrasive 'disk being bodily movable toward .and from the feed roll, anda stop for limiting its movement toward the roll.

2. A machine for roughing the margin of a piece of sheet materialhaving, in combination,

means including a feed roll and va feed disk for feeding the work, anedge guide and presser for guiding the work and pressing it against thefeed roll, a rotary abrasive disk arranged to engage the work .andprogressively abrade the margin thereof, said abrasive disk being bodilymovable toward and from the feed roll, and a stop for limiting itsmovement toward the roll.

3. A machine for roughing the margin of a piece of flexible sheetmaterial having, in combination, a rotary feed roll over which the workis fed, an edge guide, a yielding presser, a rotary abrasive toolextending over the feed roll in proximity to the presser, a rotarymember engaging the upper face of the work, said abrasive tool beingmounted for bodily movement toward and from the feed roll, and a stopfor limiting its movement toward the roll while permitting it to bemoved away from the roll by engagement with the work.

4. A machine for roughing the margin of a Dieceof flexible sheetmaterial having, in combination, a rotary feed roll over which the workis fed, an edge guide, a .yielding presser, a rotary abrasive diskhavin-g its forward operative portion extending over the feed roll intoproximity vto the presser, a rotary member engaging the upper face ofthe work, said abrasive disk being mounted for bodily movement towardand from the feed roll, and a stop for limiting its movement toward theroll while permitting it to be moved away from Vthe roll by engagementwith the work.

' 5. A machine for roughing the margin of a piece of flexible sheetmaterial having, in combination, a rotary feed roll, a yielding presserfor holding the piece against the roll, an edge guide for engaging theedge of the work, a feed disk cooperating with the roll to feed thepiece, a rotary abrasive disk arranged to engage the work andprogressively abrade the margin thereof, said abrasive disk beingmovable toward and from the feed roll, a spring for urging the abrasivedisk toward the feed roll, and a'stop for limiting said last-namedmovement.

6. VA machine for roughing the margin of a piece of flexible sheetmaterial having, in combination, a rotary feed roll, a yielding presserfor holding the piece against the roll, an edge guide for engaging theedge of the work, a feed disk cooperating witth the roll to feed thepiece, a rotary abrasive disk arranged to engage the work andprogressively abrade the margin thereof, said abrasive disk beingmovable toward and from the feed roll, a spring for urging the abrasivedisk toward the feed roll, and .a stop for limiting said last-namedmovement, said stop being adjustable to provide for pieces of work ofdifferent thick- IleSSeS.

movable toward and from the feed roll. means cooperating with the feedroll for feeding the work, an edge guide for engaging the edge of theWork and guiding it so that the margin thereof is operated upon by thedisk, a spring for urging the disk toward the feed roll, and a stop forlimiting the extent of this movement.

8. A machine for roughing the margin of a piece of limp leather having,in combination, a

rotary feed roll over which the work is fed, a yielding presser, arotary abrasive disk having its forward operative portion extending overthe feed roll into proximity to the presser, said disk being movabletoward .and from the feed roll, means cooperating with the feed roll forfeeding the work, an edge guide for engaging theedge of the work andguiding it so that the margin thereof is operated upon by the disk, aspring for urging the disk toward the feed roll, and a stop for limitingthe extent of this movement, said stop being adjustable to provide fordiiferent thicknesses of work.

